Top Features of the Park Tools Hollowtech II BB And Crank Arm Tool

16 Laser cut splines securely engage the notches of the bottom bracket cups, while the other end fits the 8 internal splines of the crank arm adjustment cap

Plastic coated handle for a secure and comfortable grip

Warning: this tool has a long handle and it is possible to damage the tool or the component by overtightening during installation

Recommended torque setting for bottom bracket cups: 35 - 50 Nm

Recommended torque setting for crank arm adjustment cap: 0.4 - 0.7 Nm

Product Data

MTB:

Yes

Road:

Yes

One end of the BBT-9 securely engages the 16 notches of the bottom bracket cups, the other end of the tool engages the 8 internal splines of the crank arm adjustment cap.

The BBT-9 also fits the rotor disc lockrings using 16 external notches.

About Workshop Tools

Workshop tools make working on your bike at home a good option, investing in a broad range of tools can save on long repair times and mean savings in the long term. At Wiggle we offer a broad range of cycle specific tools to suit the home mechanic right through to a professional team mechanic. Lifeline tools offer exceptional value for money whilst premium brands such as Park offer very high quality tools.

About the Park Tools brand

Park Tool has been manufacturing bicycle specific tools since 1963. Based out of St. Paul Minnesota, they are the world's largest bicycle tool manufacturer. A long-term dedication to quality and innovation, Park Tool is the first choice of professional and home bicycle mechanics around the world.
Their vision is shaped by more than 40 years of experience in the bicycle industry, beginning with retail stores. There they learned first hand the changing needs of quality bicycle repair and maintenance.

Delivery Information

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Hopeless with the right tools
If you need to extract a stubborn Hollowtech or MegaExo BB then this is the tool to use. It's hefty enough to stand being hit with a club hammer; mind you fingers though. On reflection, if you need to tighten the BB with the crank in place, the Shimano BB tool might be a better choice; though I doubt it's as sturdy.
02 July 2010

High quality tool
Very high quality made tool. Allows me to do more diy on the bike such as stripping it down and cleaning up all nice or replacing worn parts. It is easy to do and will pay for itself after one use so just get it and get workig on your bike yourself.
29 June 2010

Park Tools Hollowtech BB & Crank Arm Tool
This is a well made tool that does part of its job fine but has one drawback. The BB tool end seems to be fine but the crank arm tool is just a knobbly plastic disc with the right sized splines that rotates freely on the other end. It is designed like this because you are not meant to tighten the cap excessively when fitting the crank arm and to achieve this you just use your fingers on the knobbles round the outside of the disc. However there is no ratchet or other locking mechanism so you only have the same finger torque available for dismantling. This was an issue for me because the cap was mildly stuck. I had to use a Stillson to turn it. The plastic will not take too much of this. Get a crank arm tool that can be used more positively if you expect to be removing stuck crank caps.
28 June 2010

Works on Megaexo
used on FSA Megaexo BB. Excellent fit, does the job at no time.
19 June 2010

I think you would have to buy the relevant BB tool to fit the torque wrench if you want to be precise about it. I use this tool to tighten up the BB as far as it will go, which usually measures 40nm (i.e. the bottom end of the torque range for campag external BB cups) when I attach the torque wrench. Unless you are Geoff Capes, it would be hard to over-tighten a BB.

No you cannot measure torque with this tool. You can estimate it but only with experience of using known values with a torque wrench. For fitting bottom brackets with this tool, the torque needed will be described in the fitment instructions and will be quite low, but it's quite easy to fit a bottom bracket, and it's likely to need just a quick tighten to secure it - it's not going to need to require body weight leverage on this tool! If in doubt - go to your local bike shop to have the bottom bracket fitted professionally.

I can confirm that with this tool you cannot measure the torque being put into the tool. TO be able to measure this you will need to use a tool like the Park Tools Hollowtech II Bottom Bracket Tool and a standard long bar torque wrench. I hope this helps.

Answers

Answer:

To remove your 7900 cranks you should be able to do it with you 5mm alum key...start by undoing the 2 x 5mm bolts on the non-drive side crank arm and remove the centre plastic plug (this should be easy to remove you could use a screw driver) and then your cranks will just pull apart...easy as...

So in a nutshell, you don't need this tool, this tool is only for external bottom brackets....if you are only removing the cranks, you don't need this tool.